fwnode_get_mac_address
ret = fwnode_get_mac_address(acpi_fwnode_handle(adev), mac);
if (!fwnode_get_mac_address(fwnode, fw_mac_addr)) {
int fwnode_get_mac_address(struct fwnode_handle *fwnode, char *addr);
EXPORT_SYMBOL(fwnode_get_mac_address);
if (!fwnode_get_mac_address(dev_fwnode(dev), addr))